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From "Shigeru Nakagaki (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (FLEX-34098) Deleteing/Replacing Surrogate-Pair string causes RTE in TLF
Date Thu, 20 Feb 2014 09:16:21 GMT

    [ https://issues.apache.org/jira/browse/FLEX-34098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13906787#comment-13906787
] 

Shigeru Nakagaki edited comment on FLEX-34098 at 2/20/14 9:15 AM:
------------------------------------------------------------------

see ParagraphElement#findPreviousAtomBoundary()

while (--relativePosition)
{
  if (tl.getAtomIndexAtCharIndex(relativePosition) < currentAtomIndex)
    break;
}

see ParagraphElement#findNextAtomBoundary()

while (++relativePosition)
{
  if (tl.getAtomIndexAtCharIndex(relativePosition) > currentAtomIndex)
    break;
}

These logics should care about surrogate-pair string.


was (Author: shigeru):
see ParagraphElement#findPreviousAtomBoundary()

while (--relativePosition)
{
  if (tl.getAtomIndexAtCharIndex(relativePosition) < currentAtomIndex)
    break;
}

see ParagraphElement#findNextAtomBoundary()

while (++relativePosition)
{
  if (tl.getAtomIndexAtCharIndex(relativePosition) > currentAtomIndex)
    break;
}

These logics should be check surrogate-pair string.

> Deleteing/Replacing Surrogate-Pair string causes RTE in TLF
> -----------------------------------------------------------
>
>                 Key: FLEX-34098
>                 URL: https://issues.apache.org/jira/browse/FLEX-34098
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: RichEditableText
>    Affects Versions: Apache Flex 4.11.0
>         Environment: Windows 7 JP
>            Reporter: Shigeru Nakagaki
>            Priority: Critical
>              Labels: easytest
>
> Case 1
> Step 1. Input "𣘺" to s:TextInput
> Step 2. delete string of [Step 1] by DELETE/BACKSPACE key
> An RTE happens like below
>  RangeError: Invalid splitting of a surrogate pair
>  	at flashx.textLayout.elements::SpanElement/replaceText()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/http://ns.adobe.com/textLayout/internal/2008::deleteRange()
>  	at flashx.textLayout.edit::ModelEdit$/deleteText()
>  	at flashx.textLayout.operations::DeleteTextOperation/doOperation()
>  	at flashx.textLayout.edit::EditManager/doInternal()
>  	at flashx.textLayout.edit::EditManager/doOperation()
>  	at flashx.textLayout.edit::EditManager/deletePreviousCharacter()
>  	at flashx.textLayout.edit::EditManager/keyDownHandler()
>  	at flashx.textLayout.container::ContainerController/keyDownHandler()
>  	at flashx.textLayout.container::TextContainerManager/keyDownHandler()
>  	at spark.components.supportClasses::RichEditableTextContainerManager/keyDownHandler()
> Case 2
> Step 1. Input "𣘺" to s:TextInput
> Step 2. copy this string : "A"
> Step 3. select string of [Step 1]
> Step 4. press [Ctrl + V]
> Two RTE happen like below
> RangeError: Invalid splitting of a surrogate pair
>  	at flashx.textLayout.elements::SpanElement/replaceText()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/http://ns.adobe.com/textLayout/internal/2008::deleteRange()
>  	at flashx.textLayout.edit::ModelEdit$/deleteText()
>  	at flashx.textLayout.operations::DeleteTextOperation/doOperation()
>  	at flashx.textLayout.operations::InsertTextOperation/doDelete()
>  	at flashx.textLayout.operations::InsertTextOperation/doInternal()
>  	at flashx.textLayout.operations::InsertTextOperation/doOperation()
>  	at flashx.textLayout.edit::EditManager/doInternal()
>  	at flashx.textLayout.edit::EditManager/doOperation()
>  	at flashx.textLayout.edit::EditManager/flushPendingOperations()
>  	at flashx.textLayout.edit::EditManager/insertText()
>  	at spark.components::RichEditableText/handlePasteOperation()
>  	at spark.components::RichEditableText/textContainerManager_flowOperationEndHandler()
>  	at flash.events::EventDispatcher/dispatchEvent()
>  	at flashx.textLayout.container::TextContainerManager/dispatchEvent()
>  	at flash.events::EventDispatcher/dispatchEvent()
>  	at flashx.textLayout.elements::TextFlow/dispatchEvent()
>  	at flashx.textLayout.edit::EditManager/doInternal()
>  	at flashx.textLayout.edit::EditManager/doOperation()
>  	at flashx.textLayout.edit::EditManager/pasteTextScrap()
>  	at flashx.textLayout.edit::EditManager/editHandler()
>  	at flashx.textLayout.container::ContainerController/editHandler()
>  	at flashx.textLayout.container::TextContainerManager/editHandler()
>  	at flash.desktop::NativeApplication/_onKeyDownBubble()
>  RangeError: Invalid splitting of a surrogate pair
>  	at flashx.textLayout.elements::SpanElement/replaceText()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/deleteRangeInternal()
>  	at flashx.textLayout.edit::TextFlowEdit$/http://ns.adobe.com/textLayout/internal/2008::deleteRange()
>  	at flashx.textLayout.edit::ModelEdit$/deleteText()
>  	at flashx.textLayout.operations::DeleteTextOperation/doOperation()
>  	at flashx.textLayout.operations::PasteOperation/doOperation()
>  	at flashx.textLayout.edit::EditManager/doInternal()
>  	at flashx.textLayout.edit::EditManager/doOperation()
>  	at flashx.textLayout.edit::EditManager/pasteTextScrap()
>  	at flashx.textLayout.edit::EditManager/editHandler()
>  	at flashx.textLayout.container::ContainerController/editHandler()
>  	at flashx.textLayout.container::TextContainerManager/editHandler()
>  	at flash.desktop::NativeApplication/_onKeyDownBubble()



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